Why is my digital display showing -8 instead of 8 and -8 instead of 15 and probably a lot more things...

[Kaminester]

[CallumCM]

You're trying to display an unsigned number on a signed display, if you're confused about what that means check out the "Two's Compliment" section of Sebastian Lague's first video in the two part series using Digital Logic Sim.

For a quick fix, make the number output again and uncheck "signed" (I think that's what the checkbox is called).

@Kaminester